Electromagnetic locomotive bell ringer



June 10, 1930.

Filed April 4, 1928 2 Shee s-Sheet l ATTORNEY June 10, 1930. G. M. BE-SSANT 1,762,500

snac'rnomennnc LDCOMOTIVE BELL anmsn Filed 1 m 4, 1928 2 Sheets-Sheet 2 djZBea'a'anMmR ATTORNEY Patented June 10, 1930 UNITED STATES PATENT OFFICE GEORGE M. BESSANT, or SAN minnarwmo, .cauroamm ELECTROMAGNETIC LOCOMOTIVE BELL BINGEB Application filed April 4,

ing its core connected with the crank of the hell, with automatic means for breaking the circuit of the magnet on the upward stroke of the bell so that the bell will drop under the action of gravity and close the circuit again, thus causing the magnetic means to again swing the bell upwardly, but in an opposite direction from its first upward stroke.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, refer ence will be had to the accompanying draw ings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a sectional view showing the invention in use.

Figure 2 is a view taken at right angles to Figure 1 with the bell omitted, but showing the crank of the bell.

Figure 3 is a section on line 33 of Figure 1.

In these views, the numeral 1 indicates the magnet which is provided with the usual armature 2, a magnet being supported by the bracket 3 which has a hole therein through which passes the rod 4, preferably of bronze, which is connected with the upper end of the armature and a connecting rod 5 is pivotally connected with the upper end of the rod 4 and is flexibly connected with the crank 6 of the bell 7 through means of the housing 8 connected with the upper end of the rod 5 and enclosing the crank and slidingly receiving the bearings 9 of the crank and carrying the springs 10 which are arranged above and below the bearings. These springs act as shock absorbers for absorbing the shocks produced by the swinging of the bell. The springs are held in place by the bosses 11 at the ends of the housing.

A rod 12 is slidably arranged in the guide- 1928. Serial No. 267,382.

way 13 carried by the bracket 3 and upper and lower collars 14 are adj ustably fastened to .the rod, each collar being provided with a projection 15 which is adapted to be engaged by an arm 16 011 the rod 4. A plungerlike contact 17 is connected with the lower end of the rod 12 by the sleeve 18 and this contact is'adapted to engage a contact 19' to which the conductor 20, leading from the .coil to the magnet, is attached. The return conductor 21 is connected with the other end of the coil and the main conductor 22 isconnected with the lower part of the guideway 13 so that when the switch S is closed and the bell is in its lowered position, current will pass over the conductor 22, through the rod 12, the contacts 17 and 19, over the conductor 20 to the coil of the magnet and then return to the source of supply over the conductor 21. Thus the magnet will be energized and the core 2 raised so that the connecting rod 5 will push upwardly the bell, the crank 6 of which is slightly off center. When the bell nears the limit of its upward stroke, the arm 16 will strike the projection 15 of the upper collar 14 so as to raise the rod and move the contact 17 011' of contact 19 so that the circuit to the magnet will be broken and thus the parts will return to their normal position under the action of gravity and the weight of the bell. As the bell swings downwardly, its momentum will carry the crank past dead center and at the same time the arm 16, striking the projection of the lower collar 14, will lower the rod 12 so as to complete the circuit at the contacts 17 and 19 and thus the armature will again lift the bell, but in an opposite direction. Thus the magnet will swing the bell to and fro in the ordinary manner to ring the same.

The impulses imparted to the bell by the magnetic means may be adjusted to the natural swing of the bell by adjusting the collars on the rod 12.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

It is to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is A reciprocating motor comprising a magnet, a supporting bracket therefor, an armature having a threaded bore, a rod having a reduced extension threaded in said bore and providing a connection between the armature and a member to be operated, a circuit 10 for the magnet, a stationary contact arranged in the circuit, a second rod arranged at one side of the magnet, a substantially U-shaped guide for the second mentioned rod supported by the bracket for the mag- 15 net, the parallel portions of said bracket having aligned openings to slidably receive said rod, a plunger-like Contact carried by the lower end of the rod and engaging the first contact when the rod is in lowered po- 20 sition, a pair of spaced adjustable collars carried by said rod, and characterized by projections extending in the direction of the magnet, and an arm carried by the first mentioned rod and operating between said collars to alternately contact the projections thereof for the purpose specified.

In testimony whereof I afiiX my signature.

GEORGE M. BESSANT. 

